本文整理汇总了C#中System.Data.SqlClient.SqlDataReader.GetFieldType方法的典型用法代码示例。如果您正苦于以下问题：C# SqlDataReader.GetFieldType方法的具体用法？C# SqlDataReader.GetFieldType怎么用？C# SqlDataReader.GetFieldType使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Data.SqlClient.SqlDataReader的用法示例。
在下文中一共展示了SqlDataReader.GetFieldType方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: Main
//引入命名空间
using System;
using System.Data;
using System.Data.SqlClient;
class StronglyTypedColumnValues {
public static void Main() {
SqlConnection mySqlConnection = new SqlConnection("server=localhost;database=Northwind;uid=sa;pwd=sa");
SqlCommand mySqlCommand = mySqlConnection.CreateCommand();
mySqlCommand.CommandText =
"SELECT TOP 5 ProductID, ProductName, UnitPrice, " +
"UnitsInStock, Discontinued " +
"FROM Products " +
"ORDER BY ProductID";
mySqlConnection.Open();
SqlDataReader productsSqlDataReader =
mySqlCommand.ExecuteReader();
int productIDColPos = productsSqlDataReader.GetOrdinal("ProductID");
int productNameColPos = productsSqlDataReader.GetOrdinal("ProductName");
int unitPriceColPos = productsSqlDataReader.GetOrdinal("UnitPrice");
int unitsInStockColPos = productsSqlDataReader.GetOrdinal("UnitsInStock");
int discontinuedColPos = productsSqlDataReader.GetOrdinal("Discontinued");
Console.WriteLine("ProductID .NET type = " + productsSqlDataReader.GetFieldType(productIDColPos));
Console.WriteLine("ProductName .NET type = " + productsSqlDataReader.GetFieldType(productNameColPos));
Console.WriteLine("UnitPrice .NET type = " + productsSqlDataReader.GetFieldType(unitPriceColPos));
Console.WriteLine("UnitsInStock .NET type = " + productsSqlDataReader.GetFieldType(unitsInStockColPos));
Console.WriteLine("Discontinued .NET type = " + productsSqlDataReader.GetFieldType(discontinuedColPos));
Console.WriteLine("ProductID database type = " + productsSqlDataReader.GetDataTypeName(productIDColPos));
Console.WriteLine("ProductName database type = " + productsSqlDataReader.GetDataTypeName(productNameColPos));
Console.WriteLine("UnitPrice database type = " + productsSqlDataReader.GetDataTypeName(unitPriceColPos));
Console.WriteLine("UnitsInStock database type = " + productsSqlDataReader.GetDataTypeName(unitsInStockColPos));
Console.WriteLine("Discontinued database type = " + productsSqlDataReader.GetDataTypeName(discontinuedColPos));
while (productsSqlDataReader.Read()) {
int productID = productsSqlDataReader.GetInt32(productIDColPos);
Console.WriteLine("productID = " + productID);
string productName = productsSqlDataReader.GetString(productNameColPos);
Console.WriteLine("productName = " + productName);
decimal unitPrice = productsSqlDataReader.GetDecimal(unitPriceColPos);
Console.WriteLine("unitPrice = " + unitPrice);
short unitsInStock = productsSqlDataReader.GetInt16(unitsInStockColPos);
Console.WriteLine("unitsInStock = " + unitsInStock);
bool discontinued = productsSqlDataReader.GetBoolean(discontinuedColPos);
Console.WriteLine("discontinued = " + discontinued);
}
productsSqlDataReader.Close();
mySqlConnection.Close();
}
}